
This cozy Japanese houtou-style udon soup is rich with sweet kabocha squash, tender root vegetables, miso, and savory dashi. A little flour on the noodles and diced mochi help thicken the broth into a warming, comforting meal.
Cut the kabocha squash, daikon, and carrot into short, thin rectangular slices so they cook evenly. Thinly slice the onion, cut the aburaage into strips, and dice the mochi into 5 mm cubes.

Loosen the udon noodles gently with your hands, then dust them evenly with the flour. Beat the egg in a small bowl and set it aside.

Pour the dashi stock into a large pot and heat it over medium heat until it is just about to boil. Add the daikon, carrot, onion, aburaage, and diced mochi, then simmer until the vegetables begin to soften.

Add the kabocha squash, miso, and mentsuyu. Stir gently to dissolve the miso without breaking up the squash.

Add the floured udon noodles and simmer, stirring carefully from the bottom of the pot, until the noodles are heated through and the broth thickens slightly.

Slowly drizzle in the beaten egg in a circular motion. Cover the pot, turn off the heat, and let it steam for 1 minute before serving hot.

Use awase miso or white miso for a mellow flavor, and adjust the mentsuyu to taste depending on its concentration. Add the kabocha after the firmer vegetables so it stays tender but does not collapse. Leftovers will thicken as they sit; loosen with a little dashi or water when reheating.